[单项选择]

"All work and no play makes Jack a dull boy." is a popular saying in the United States. Other countries have similar sayings. It is true that all of us need recreation. We cannot work all the time if we are going to maintain good health and enjoy life. Good physical and mental health in fact enables us to work more efficiently.
Everyone has his own way of relaxing. Perhaps the most popular way is to participate in sports. There arc team sports, such as baseball, basketball, and football. There are individual sports, also, such as golf and swimming. In addition, hi king, fishing, skiing and mountain climbing have a great attraction for people who like to be outdoors. Chess, card - playing, and dancing are forms of indoor recreation enjoyed by many people.
Not everyone who enjoys sporting events likes to participate in them. Many people prefer to be spectators, either by at tending the games in person, watching them on television, or listening to t
A. Jack is a dull boy because he works all day long
B. recreation is necessary for all of us
C. we should maintain good health and enjoy life
D. we should work more efficiently

"All work and no play makes Jack a dull boy." is a popular saying in the United States. Other countries have similar sayings. It is true that all of us need recreation. We cannot work all the time if we are going to maintain good health and enjoy life. Good physical and mental health in fact enables us to work more efficiently.
Everyone has his own way of relaxing. Perhaps the most popular way is to participate in sports. There arc team sports, such as baseball, basketball, and football. There are individual sports, also, such as golf and swimming. In addition, hi king, fishing, skiing and mountain climbing have a great attraction for people who like to be outdoors. Chess, card - playing, and dancing are forms of indoor recreation enjoyed by many people.
Not everyone who enjoys sporting events likes to participate in them. Many people prefer to be spectators, either by at tending the games in person, watching them on television, or listening to t
A. If we work for a long time, we cannot maintain good health and enjoy life.
B. If we want to get relaxed, we must participate in sports.
C. The most popular way of relaxing is to become spectators.
D. It is necessary that we relax for some time and have recreation.